Fuel Injector Cleaning

[Fast Freddie]

Has anybody had any luck dismantling and cleaning TPI fuel injectors at home? i have some that i feel are causing me issues and want to learn more about them. i thought i might try to take apart a couple of odd injectors i have laying around ( non GM ) as a trial and error learning experience. it's always nice to have a little input from someone that has already tried this... the issues are not with my personal vette, but one that i'm temporarily in custody of... it's a long story.

 

[Hib Halverson]

Fuel injectors for 85-91 "TPI" engines are not user serviceable.

 

[eddie20875]

maybe you should get the injector cleaner that you hook up to fuel rail and car runs off of it until the can is empty. many shops use this technique.

 

[Fast Freddie]

i thought i had read somewhere ( internet ) that ALL injectors could be cleaned/serviced/refurbished... im not that familiar with this subject, but i am researching it. not necessarily just GM injectors but all automotive injectors... could be really handy information to have in my used car business... i appreciate all input.

 

[bczee]

Their are Fuel Injector servicing shops that you can send your injecto to and they will clean, referbish and flow match them. You can find them on the internet.. Just do a Yahoo or Google search for "Fuel Injector Service"

They charge anywere from $20 to $75 per Inject to refurbish them. About 1/2 the cost of buying new ones.

 

[eddie20875]

just read an article about replacemant injectors and bosch were listed for about $87.00. may want to check the prices for new ones than refurbished. sometimes it isn't worth rebuilding them.

 

[milehigreg]

Injector Refurbishing

I have used a company called witchhunter.com for a couple of sets of injectors for the MR2s I run for the kids. Excellent results and service. They flow test, clean them up, replace the o-rings, flow test after and send you back the injectors wth a test report. All done and returned in about a week. $15/ injector

 

[Fast Freddie]

i appreciate all your responses. its good to have options. however in this case, im in the learning mode. i just wanted to play with some injectors and see if i could do anything with them using home methods. i have a feeling that injectors are somewhat simple, but not usually messed with by the average enthusiast. as stated above it easier to replace than mess with them. i sppose i'll just tear up a few injectors and see whats in there...

 

[Hib Halverson]

i thought i had read somewhere ( internet ) that ALL injectors could be cleaned/serviced/refurbished... im not that familiar with this subject, but i am researching it. not necessarily just GM injectors but all automotive injectors... could be really handy information to have in my used car business... i appreciate all input.

Some injectors can be "cleaned/serviced/refurbished", however, this process almost never involves disassembly because that usually destroys the injector.

The cleaning is accomplished by submerging the injector in a solvent contained in an tank which is vibrated ultrasonically. The injectors are also connected to drivers which pulse the injectors while the ultrasonic "cleaning" is underway.

Injectors can only be "serviced" or "refurbished" to the extent that this ultrasonic cleaning combined with visual inspection and electrical testing can be conducted.

Most injectors used in automotive electronic fuel injection and all injectors used in GM vehicles cannot be disassembled, serviced or modified and then reassembled. As I said earlier, disassembly destroys the injector.

Most "refurbished" or "rebuilt" injectors have simply been cleaned ultrasonically, then tested electronically and, finally, flow-ested. They are not rebuilt in the sense that one replaces their coils or installs new pintels or spray plates.

Most "rebuilt" injectors are sold to the low-end of the market and, by design, are very low cost. As a result, sets of rebuilt injectors may vary in flow rates in a range greater than is acceptable for high-performance applications. For that reason, rebuilt injectors sold as a low-cost alternative to new injectors, should be carefully considered for hi-po use.

Now....injector cleaning and flow testing, performed by one of the few injector specialists who truly do high-performance work, such as RC Engineering, is a good thing. For a number of years, RC Engineering has done all my injector cleaning and flow testing.

Lastly, off-engine injector cleaning is seldom needed if 1) you've been using good gasoline, 2) you drive your car regularly, 3) your fuel system has no problems with high moisture content and 4) you occasionally use a detergent-based, pour-in injector cleaner such as 'Chevron Techron" or, even better, "Red Line Complete Fuel System Cleaner". Solvent-based cleaners, such as are sold by mass-marketers, are not as effective.

On the other hand, if you use the cheapest gas you can buy, regardless of brand, your car sees long periods of time parked and/or moisture develops in the fuel tank and/or you drive a lot of short trips and...if a pour-in, detergent-based injector cleaner was not sucessful in clearing a case of injector fouling, then off-car cleaning or even injector replacement may be necessary.

 

[Fast Freddie]

thanks for the additional info. i'm learning!!

 

[Achilles]

RC Engineering did a great job for me. I had my injectors serviced by them last year. Don't remember the cost, but it was pretty reasonable compared to buying new OEM units.

 

[Vis Croceus]

Brand new set of injectors with better technology than 20 year old GM injectors: $300.


Not spending almost that much to have injectors cleaned and then having one fail the next week because it's 20 years old: priceless.

 

[Achilles]

Brand new set of injectors with better technology than 20 year old GM injectors: $300.


Not spending almost that much to have injectors cleaned and then having one fail the next week because it's 20 years old: priceless.

Buying cheaper aftermarket injectors that stick open 2 months after purchase: ****er

 

[southbay]

new member: southbay

Hello all, we are a company called SouthBay Fuel Injectors. We are new to this forum......... **Snip** Hi there southbay, please check your Private Message Center........

 

[Rob]

Hello all, we are a company called SouthBay Fuel Injectors. We are new to this forum......... **Snip** Hi there southbay, please check your Private Message Center........

Sorry, but I do not allow free advertising on this site.

We have companies that pay to advertise here.

If you would like more information on advertising on the Corvette Action Center and becoming an Inventory Partner here, you are welcome to learn more about that program and contact us:

http://www.corvetteactioncenter.com/advertise/

 

[southbay]

Hi Rob, I wish to express our sincere apology, this is our first entrance to a forum, and I can see that we did not follow the rules? Please forgive us as this has been a learning experience for us. We would be more than happy to pay what to advertise on your forum if you will allow us to! Once again please accept our apology.
Best Regards,
SouthBay Fuel Injectors

you can contact us at 516-492-6504 at anytime!

 

[southbay]

Sorry, but I do not allow free advertising on this site.

We have companies that pay to advertise here.

If you would like more information on advertising on the Corvette Action Center and becoming an Inventory Partner here, you are welcome to learn more about that program and contact us:

http://www.corvetteactioncenter.com/advertise/http://www.corvetteactioncenter.com/advertise/http://www.corvetteactioncenter.com/advertise/

Hi Rob, I have sent 2 other emails to you expressing our apologies for not being aware of the rules of the forum. This is the first forum that we have joined and so far it looks like we got off to a bumpy start. We would be more than happy to pay the fee to advertise if you will allow us. Please contact us at 516-492-6504. Thank you, SouthBay Fuel Injectors!

 

[chevylu]

Has anybody had any luck dismantling and cleaning TPI fuel injectors at home? i have some that i feel are causing me issues and want to learn more about them. i thought i might try to take apart a couple of odd injectors i have laying around ( non GM ) as a trial and error learning experience. it's always nice to have a little input from someone that has already tried this... the issues are not with my personal vette, but one that i'm temporarily in custody of... it's a long story.

I asked a similar question here:

http://forums.corvetteforum.com/showthread.php?t=2073058&highlight=

 

[southbay]

southbay

I asked a similar question here:

http://forums.corvetteforum.com/showthread.php?t=2073058&highlight=

Not to my knowledge. Dismantling will destroy the injector.